381 lines
10 KiB
C
381 lines
10 KiB
C
/*
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* Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
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* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/if.h>
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#include <linux/interrupt.h>
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#include <linux/netdevice.h>
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#include <linux/rtnetlink.h>
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#include <linux/notifier.h>
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#include <net/mac80211.h>
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#include <net/cfg80211.h>
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#include "ieee80211_i.h"
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#include "ieee80211_rate.h"
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#include "debugfs.h"
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#include "debugfs_netdev.h"
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static ssize_t ieee80211_if_read(
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struct ieee80211_sub_if_data *sdata,
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char __user *userbuf,
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size_t count, loff_t *ppos,
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ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int))
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{
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char buf[70];
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ssize_t ret = -EINVAL;
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read_lock(&dev_base_lock);
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if (sdata->dev->reg_state == NETREG_REGISTERED) {
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ret = (*format)(sdata, buf, sizeof(buf));
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ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
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}
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read_unlock(&dev_base_lock);
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return ret;
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}
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#define IEEE80211_IF_FMT(name, field, format_string) \
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static ssize_t ieee80211_if_fmt_##name( \
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const struct ieee80211_sub_if_data *sdata, char *buf, \
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int buflen) \
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{ \
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return scnprintf(buf, buflen, format_string, sdata->field); \
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}
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#define IEEE80211_IF_FMT_DEC(name, field) \
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IEEE80211_IF_FMT(name, field, "%d\n")
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#define IEEE80211_IF_FMT_HEX(name, field) \
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IEEE80211_IF_FMT(name, field, "%#x\n")
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#define IEEE80211_IF_FMT_SIZE(name, field) \
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IEEE80211_IF_FMT(name, field, "%zd\n")
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#define IEEE80211_IF_FMT_ATOMIC(name, field) \
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static ssize_t ieee80211_if_fmt_##name( \
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const struct ieee80211_sub_if_data *sdata, \
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char *buf, int buflen) \
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{ \
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return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
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}
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#define IEEE80211_IF_FMT_MAC(name, field) \
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static ssize_t ieee80211_if_fmt_##name( \
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const struct ieee80211_sub_if_data *sdata, char *buf, \
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int buflen) \
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{ \
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DECLARE_MAC_BUF(mac); \
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return scnprintf(buf, buflen, "%s\n", print_mac(mac, sdata->field));\
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}
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#define __IEEE80211_IF_FILE(name) \
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static ssize_t ieee80211_if_read_##name(struct file *file, \
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char __user *userbuf, \
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size_t count, loff_t *ppos) \
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{ \
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return ieee80211_if_read(file->private_data, \
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userbuf, count, ppos, \
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ieee80211_if_fmt_##name); \
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} \
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static const struct file_operations name##_ops = { \
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.read = ieee80211_if_read_##name, \
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.open = mac80211_open_file_generic, \
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}
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#define IEEE80211_IF_FILE(name, field, format) \
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IEEE80211_IF_FMT_##format(name, field) \
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__IEEE80211_IF_FILE(name)
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/* common attributes */
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IEEE80211_IF_FILE(channel_use, channel_use, DEC);
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IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
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/* STA/IBSS attributes */
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IEEE80211_IF_FILE(state, u.sta.state, DEC);
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IEEE80211_IF_FILE(bssid, u.sta.bssid, MAC);
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IEEE80211_IF_FILE(prev_bssid, u.sta.prev_bssid, MAC);
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IEEE80211_IF_FILE(ssid_len, u.sta.ssid_len, SIZE);
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IEEE80211_IF_FILE(aid, u.sta.aid, DEC);
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IEEE80211_IF_FILE(ap_capab, u.sta.ap_capab, HEX);
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IEEE80211_IF_FILE(capab, u.sta.capab, HEX);
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IEEE80211_IF_FILE(extra_ie_len, u.sta.extra_ie_len, SIZE);
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IEEE80211_IF_FILE(auth_tries, u.sta.auth_tries, DEC);
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IEEE80211_IF_FILE(assoc_tries, u.sta.assoc_tries, DEC);
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IEEE80211_IF_FILE(auth_algs, u.sta.auth_algs, HEX);
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IEEE80211_IF_FILE(auth_alg, u.sta.auth_alg, DEC);
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IEEE80211_IF_FILE(auth_transaction, u.sta.auth_transaction, DEC);
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static ssize_t ieee80211_if_fmt_flags(
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const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
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{
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return scnprintf(buf, buflen, "%s%s%s%s%s%s%s\n",
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sdata->u.sta.flags & IEEE80211_STA_SSID_SET ? "SSID\n" : "",
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sdata->u.sta.flags & IEEE80211_STA_BSSID_SET ? "BSSID\n" : "",
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sdata->u.sta.flags & IEEE80211_STA_PREV_BSSID_SET ? "prev BSSID\n" : "",
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sdata->u.sta.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "",
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sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "",
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sdata->u.sta.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "",
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sdata->bss_conf.use_cts_prot ? "CTS prot\n" : "");
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}
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__IEEE80211_IF_FILE(flags);
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/* AP attributes */
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IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
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IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
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IEEE80211_IF_FILE(num_beacons, u.ap.num_beacons, DEC);
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IEEE80211_IF_FILE(force_unicast_rateidx, u.ap.force_unicast_rateidx, DEC);
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IEEE80211_IF_FILE(max_ratectrl_rateidx, u.ap.max_ratectrl_rateidx, DEC);
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static ssize_t ieee80211_if_fmt_num_buffered_multicast(
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const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
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{
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return scnprintf(buf, buflen, "%u\n",
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skb_queue_len(&sdata->u.ap.ps_bc_buf));
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}
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__IEEE80211_IF_FILE(num_buffered_multicast);
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/* WDS attributes */
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IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
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#define DEBUGFS_ADD(name, type)\
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sdata->debugfs.type.name = debugfs_create_file(#name, 0444,\
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sdata->debugfsdir, sdata, &name##_ops);
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static void add_sta_files(struct ieee80211_sub_if_data *sdata)
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{
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DEBUGFS_ADD(channel_use, sta);
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DEBUGFS_ADD(drop_unencrypted, sta);
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DEBUGFS_ADD(state, sta);
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DEBUGFS_ADD(bssid, sta);
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DEBUGFS_ADD(prev_bssid, sta);
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DEBUGFS_ADD(ssid_len, sta);
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DEBUGFS_ADD(aid, sta);
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DEBUGFS_ADD(ap_capab, sta);
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DEBUGFS_ADD(capab, sta);
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DEBUGFS_ADD(extra_ie_len, sta);
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DEBUGFS_ADD(auth_tries, sta);
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DEBUGFS_ADD(assoc_tries, sta);
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DEBUGFS_ADD(auth_algs, sta);
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DEBUGFS_ADD(auth_alg, sta);
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DEBUGFS_ADD(auth_transaction, sta);
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DEBUGFS_ADD(flags, sta);
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}
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static void add_ap_files(struct ieee80211_sub_if_data *sdata)
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{
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DEBUGFS_ADD(channel_use, ap);
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DEBUGFS_ADD(drop_unencrypted, ap);
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DEBUGFS_ADD(num_sta_ps, ap);
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DEBUGFS_ADD(dtim_count, ap);
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DEBUGFS_ADD(num_beacons, ap);
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DEBUGFS_ADD(force_unicast_rateidx, ap);
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DEBUGFS_ADD(max_ratectrl_rateidx, ap);
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DEBUGFS_ADD(num_buffered_multicast, ap);
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}
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static void add_wds_files(struct ieee80211_sub_if_data *sdata)
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{
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DEBUGFS_ADD(channel_use, wds);
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DEBUGFS_ADD(drop_unencrypted, wds);
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DEBUGFS_ADD(peer, wds);
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}
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static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
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{
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DEBUGFS_ADD(channel_use, vlan);
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DEBUGFS_ADD(drop_unencrypted, vlan);
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}
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static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
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{
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}
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static void add_files(struct ieee80211_sub_if_data *sdata)
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{
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if (!sdata->debugfsdir)
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return;
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switch (sdata->vif.type) {
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case IEEE80211_IF_TYPE_STA:
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case IEEE80211_IF_TYPE_IBSS:
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add_sta_files(sdata);
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break;
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case IEEE80211_IF_TYPE_AP:
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add_ap_files(sdata);
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break;
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case IEEE80211_IF_TYPE_WDS:
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add_wds_files(sdata);
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break;
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case IEEE80211_IF_TYPE_MNTR:
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add_monitor_files(sdata);
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break;
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case IEEE80211_IF_TYPE_VLAN:
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add_vlan_files(sdata);
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break;
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default:
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break;
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}
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}
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#define DEBUGFS_DEL(name, type) \
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do { \
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debugfs_remove(sdata->debugfs.type.name); \
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sdata->debugfs.type.name = NULL; \
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} while (0)
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static void del_sta_files(struct ieee80211_sub_if_data *sdata)
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{
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DEBUGFS_DEL(channel_use, sta);
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DEBUGFS_DEL(drop_unencrypted, sta);
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DEBUGFS_DEL(state, sta);
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DEBUGFS_DEL(bssid, sta);
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DEBUGFS_DEL(prev_bssid, sta);
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DEBUGFS_DEL(ssid_len, sta);
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DEBUGFS_DEL(aid, sta);
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DEBUGFS_DEL(ap_capab, sta);
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DEBUGFS_DEL(capab, sta);
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DEBUGFS_DEL(extra_ie_len, sta);
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DEBUGFS_DEL(auth_tries, sta);
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DEBUGFS_DEL(assoc_tries, sta);
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DEBUGFS_DEL(auth_algs, sta);
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DEBUGFS_DEL(auth_alg, sta);
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DEBUGFS_DEL(auth_transaction, sta);
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DEBUGFS_DEL(flags, sta);
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}
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static void del_ap_files(struct ieee80211_sub_if_data *sdata)
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{
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DEBUGFS_DEL(channel_use, ap);
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DEBUGFS_DEL(drop_unencrypted, ap);
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DEBUGFS_DEL(num_sta_ps, ap);
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DEBUGFS_DEL(dtim_count, ap);
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DEBUGFS_DEL(num_beacons, ap);
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DEBUGFS_DEL(force_unicast_rateidx, ap);
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DEBUGFS_DEL(max_ratectrl_rateidx, ap);
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DEBUGFS_DEL(num_buffered_multicast, ap);
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}
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static void del_wds_files(struct ieee80211_sub_if_data *sdata)
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{
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DEBUGFS_DEL(channel_use, wds);
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DEBUGFS_DEL(drop_unencrypted, wds);
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DEBUGFS_DEL(peer, wds);
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}
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static void del_vlan_files(struct ieee80211_sub_if_data *sdata)
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{
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DEBUGFS_DEL(channel_use, vlan);
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DEBUGFS_DEL(drop_unencrypted, vlan);
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}
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static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
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{
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}
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static void del_files(struct ieee80211_sub_if_data *sdata, int type)
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{
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if (!sdata->debugfsdir)
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return;
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switch (type) {
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case IEEE80211_IF_TYPE_STA:
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case IEEE80211_IF_TYPE_IBSS:
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del_sta_files(sdata);
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break;
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case IEEE80211_IF_TYPE_AP:
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del_ap_files(sdata);
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break;
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case IEEE80211_IF_TYPE_WDS:
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del_wds_files(sdata);
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break;
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case IEEE80211_IF_TYPE_MNTR:
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del_monitor_files(sdata);
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break;
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case IEEE80211_IF_TYPE_VLAN:
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del_vlan_files(sdata);
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break;
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default:
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break;
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}
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}
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static int notif_registered;
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void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
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{
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char buf[10+IFNAMSIZ];
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if (!notif_registered)
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return;
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sprintf(buf, "netdev:%s", sdata->dev->name);
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sdata->debugfsdir = debugfs_create_dir(buf,
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sdata->local->hw.wiphy->debugfsdir);
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}
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void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
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{
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del_files(sdata, sdata->vif.type);
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debugfs_remove(sdata->debugfsdir);
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sdata->debugfsdir = NULL;
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}
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void ieee80211_debugfs_change_if_type(struct ieee80211_sub_if_data *sdata,
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int oldtype)
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{
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del_files(sdata, oldtype);
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add_files(sdata);
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}
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static int netdev_notify(struct notifier_block * nb,
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unsigned long state,
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void *ndev)
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{
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struct net_device *dev = ndev;
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struct dentry *dir;
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struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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char buf[10+IFNAMSIZ];
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if (state != NETDEV_CHANGENAME)
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return 0;
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if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy)
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return 0;
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if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
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return 0;
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sprintf(buf, "netdev:%s", dev->name);
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dir = sdata->debugfsdir;
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if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
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printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
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"dir to %s\n", buf);
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return 0;
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}
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static struct notifier_block mac80211_debugfs_netdev_notifier = {
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.notifier_call = netdev_notify,
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};
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void ieee80211_debugfs_netdev_init(void)
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{
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int err;
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err = register_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
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if (err) {
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printk(KERN_ERR
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"mac80211: failed to install netdev notifier,"
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" disabling per-netdev debugfs!\n");
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} else
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notif_registered = 1;
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}
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void ieee80211_debugfs_netdev_exit(void)
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{
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unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
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notif_registered = 0;
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}
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